Emergency Brake Troubles

i have a 2005 v6 and we i bought it with 68,000 miles on it the parking brake lever wouldnt move. since then ive gotten it to go about half way up but now it seems like its dragging. i can really tell upon acceleration (and on my gas gauge) i dont really know what to do. advice would be nice. also any good cheap and easy weekend project ideas would be nice!!!